zallery/src/zall/Zallery.java

package zall;

import java.util.logging.Level;
import java.util.logging.Logger;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;

import zall.util.ZalleryEmail;
import zutil.db.DBConnection;
import zutil.log.LogUtil;

public class Zallery extends HttpServlet{
    private static Logger logger = LogUtil.getLogger();

    public static final String VERSION = "1.0.2";

    public static String WEBSITE_NAME = "Example.com";
    public static String WEBSITE_URL = "http://example.com";
    public static String WEBSITE_EMAIL = "admin@example.com";
    public static String WEBSITE_EMAIL_NICE = "Example.com Admin";
    public static String SMTP_HOST = "localhost";
    public static String ROOT_PATH = "";
    public static String DATA_PATH = "";

    /**
     * Config Options:
     * <br>- WEBSITE_NAME
     * <br>- WEBSITE_URL
     * <br>- SMTP_HOST
     * <br>- DATA_PATH
     */
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        // java:comp/env
        ROOT_PATH = config.getServletContext().getRealPath("/");
        try {
            Context context = new InitialContext();
            // Check if Zallery has been properly configured
            if ("C:\\\\data".equals(context.lookup("java:comp/env/DATA_PATH")))
                throw new ServletException("Zallery has not been properly configured, set proper configuration in Zallery.xml context file.");

            WEBSITE_NAME       = (String)context.lookup("java:comp/env/WEBSITE_NAME");
            WEBSITE_URL        = (String)context.lookup("java:comp/env/WEBSITE_URL");
            if( WEBSITE_URL.charAt(WEBSITE_URL.length()-1) != '/')
                WEBSITE_URL += "/";

            WEBSITE_EMAIL      = (String)context.lookup("java:comp/env/WEBSITE_EMAIL");
            WEBSITE_EMAIL_NICE = (String)context.lookup("java:comp/env/WEBSITE_EMAIL_NICE");
            SMTP_HOST          = (String)context.lookup("java:comp/env/WEBSITE_EMAIL_NICE");
            DATA_PATH          = (String)context.lookup("java:comp/env/DATA_PATH");

            LogUtil.setLevel("zall", Level.FINEST);
            //LogUtil.setLevel("zutil", Level.FINEST);
        } catch (NamingException e) {
            throw new ServletException(e);
        }
    }

    public void destroy(){

    }

    public static DBConnection getDB() throws ServletException{
        try {
            return new DBConnection("jdbc/mysql");
        } catch (Exception e) {
            throw new ServletException(e);
        }
    }


    public static String getCookieValue(Cookie[] cookies, String name) {
        if( cookies == null )
            return null;
        for(Cookie cookie : cookies) {
            if ( name.equals(cookie.getName()) )
                return cookie.getValue();
        }
        return null;
    }

    public static String getWebsiteName() {
        return WEBSITE_NAME;
    }

    public static String getWebsiteURL() {
        return WEBSITE_URL;
    }

    // /mywebapp/servlet/MyServlet/a/b;c=123?d=789
    public static String getUrl(HttpServletRequest req) {
        String reqUri = req.getRequestURI().toString();
        String queryString = req.getQueryString();   // d=789
        if (queryString != null) {
            reqUri += "?"+queryString;
        }
        return reqUri;
    }
}